Over 5,000 naked people braved a chilly¹ morning to join a mass photo shoot at Sydney's Opera House on Monday, putting a nude² twist on the Australian landmark³.

本周一清晨，五千多名赤身裸体的男女冒着严寒聚集在悉尼歌剧院门前拍摄集体裸照，给澳大利亚的这一地标性建筑增添了几分“裸”意。

An image of mass photo shoot at Sydney's Opera House on Monday. Over 5,000 naked people braved a chilly morning to join a mass photo shoot at Sydney's Opera House on Monday, putting a nude twist on the Australian landmark.

People of all ages, shapes and sizes assembled on the shell-shaped building's steps before dawn（凌晨，拂晓） for renowned⁴（著名的，有声望的） American artist Spencer Tunick, who photographed them with hands raised, lying down and embracing.

The event, titled "The Base", drew double the expected turnout and was timed to coincide with Sydney's annual Gay and Lesbian Mardi Gras Parade on Saturday.

"Gay men and women lay naked next to their straight neighbours and this delivered a very strong message to the world that Australians embrace a free and equal society," Tunick said.

About half of the 5,200 models were also photographed inside the concert hall.

The artist is well known for his mass-nude art installations, drawing thousands of people to dozens of events all over the world.

"I thought it would be all old people and nudists（裸体主义者） , but everyone's here. It's great," student Art Rush, 19, told national news agency AAP.

"I'll never get a chance to do this again, it's not worth being inhibited⁵（羞怯的，禁止的） . It doesn't feel sexual, it just feels tribal⁶, a gathering⁷ of humanity."

Anna Bruce, 28, said shedding（脱落） her clothes seemed "really normal".

"It was easier than I expected, it was really normal, there was no problem with getting our kit⁸ off," she said.

Scott Faulder, 19, said the installation was "just another excuse to get naked".